There are a few ways to increase gas mileage but the most effective is the use of fuel infusion. Fuel Infusion is a powerful fuel catalyst that improves the efficiency of the combustion process in your car's engine.
The super beetle was not put into production until 1971, there is no such vehicle as a 1964 super beetle.
decode vin 1973 Volkswagen beetle
A 1963 Volkswagen Super Beetle
1963 Volkswagen Super Beetle
1600cc carburated
.028"
I bought a 73 super beetle, sport bug and it was aprox 1800.00
The Super Beetle has a slightly longer body (front end) and more modern McPherson front suspension instead of the torsion tube type.
They began production in 1970, and the first SuperBeetle was released in 1971.
Call a locksmith he can make you one on the spot.
That depends on your location, the condition of the car, the mileage, and what modifications/options have been installed.
Figure $350 for a rebuilt unit, $100-150 to install.